I heard about this, too. I guess JBL also purposly spilled his drink on Styles. Though, the report I read stated that there was no escalation leading to the punch--Styles got pissed and just did it, leading to JBL trying to come back at him before it all got broken up.
Good for Styles. I love JBL's on-screen work, but the guy seems like a bully and got what's coming to him.
I can just picture the Blue Meanie sitting in front of his computer screen giggling like a school girl.